di­chokey – Con­struct di­choto­mous iden­ti­fi­ca­tion keys

The pack­age can be used to con­struct di­choto­mous iden­ti­fi­ca­tion
keys (used es­pe­cially in bi­ol­ogy for species iden­ti­fi­ca­tion),
tak­ing care of num­ber­ing and in­den­ta­tion of suc­ces­sive key steps
au­to­mat­i­cally. An ex­am­ple file is pro­vided, which demon­strates
us­age.